Industrial truck



G. L. TURNER June 2, 1953 INDUSTRIAL TRUCK 4 Sheet-Sheet 1 Filed 001:.22. 1948 INVENTOR. Geo ge L. ZZZ/7e! Wad/M02254 alias.

June 2, 1953 G. TURNER 2,640,611

' INDUSTRIAL TRUCK Filed on. 22, 1948 I 4'Sheets-Sheef 2 IN VEN TOR.

eogge l. 7473201" G. 1.. TURNER INDUSTRIAL TRUCK June 2, 1953 Filed Oct.22, 1948 4 Sheets-Sheet 3' INVENMR: 5602196 L 71727281" June 2, 9.53 e.L. TURNER INDUSTRIAL TRUCK 4 Sheets-Sheet 4 Filed 001;. 22, 1948 m" mwwm w W JL M W 6 m i, QN %N O %N\ Patented June 2, 1953 INDUSTRIAL TRUCKGeorge L. Turner, Battle Creek, Mich., assignor to Clark Equipment Mich,a corporation of Michigan Company, Buchanan,

Application October 22, 1948, Serial No. 55,982

14 Claims.

My invention relates generally to industrial trucks and moreparticularly to an industrial truck which is adapted to draw asheet-like pallet on which a load is disposed, on to a load supportingmember of the truck and to push the load off of said member, togetherwith mechanism for-retaining the pallet on the load supporting memberwhen the load is discharged therefrom.

The present invention constitutes an improvement on the industrial truckdisclosed in the co-pending application of George L. Turner and FredSherrifi, Serial No. 766,558, filed August 6, 1947 now Patent No.2,590,355, granted March 25, 1952. The present invention is alsodirected to an improved means for handling material disposed on apallet, and more particularly on a sheet-like pallet, such as thatillustrated in the co-pending application of George L. Turner, SerialNo. 717,769, filed December 12, 1946.

The latter application disclosed a method of handling material on asheet-like pallet which may be drawn on to a load supporting surface ofan industrial truck by gripping a traction portion of the pallet andsubsequently releasing the :grip on said pallet and discharging it andthe unit load from the load supporting surface. It is contemplated thatsuch load supporting surface may be vertically movable and tiltableforwardly and backwardly. In some handling operations of material on asheet-like pallet the han- =dler may desire to retain the pallet and todischarge the load from the pallet and the load supporting surface ofthe industrial truck. An example of such instance is when the load isdischarged into a box car truck or the like for transport to a distantpoint.

It is an object of the present invention to provide means whereby asheet-like pallet and load may be drawn on to the load supportingsurface of an industrial truck and may thereafter be retained on theload supporting surface while permitting discharge of the load from thepallet and truck.

It is a further object of the invention to provide suitable mechanismfor handling the material in that manner. In the preferred form of themechanism the means for retainin the pallet on the load supportingsurface, together with 7 said surface, is readily adapted forinstallation as a unit on existing industrial trucks and is adapted foreasy removal to permit the substitution of other load supportingsurfaces such as a standard lift fork,

It is another object of the invention to provide control mechanism forthe pallet retaining mechanism whereby the operator is enabledselectively to retain the pallet on the load supporting surface, or todischarge it therefrom,

when the load is discharged.

It is another object of the invention to provide remote control meansfor the operator of the industrial truck whereby the pallet retainingmeans is operable by the driver of the truck from the drivers seat.

It is yet another object .of the invention that the actuating means forsaid pallet retaining mechanism be operated in response to the directionin which the load supporting surface is tilted by the operator.

Other objects, uses and advantages of my invention will become apparent,or be obvious, from the following description when taken with theaccompanying drawings in which:

Figure 1 is a side elevational view of a conventional type of industrialtruck incorporating the present invention;

Figure 2 is an enlarged side elevational view showing the mechanism ofthe present invention alone;

Figure 3 is a partial front elevational view 01 the mechanism shown inFigure 2, certain portions of the mechanism being shown in section;

Figure 4 is a fragmentary view of the pallet retaining mechanism of myinvention showing its position as a load is being drawn onto the loadsupporting member;

Figure 5 is a fragmentary view, similar to Figure 4, showing the palletretaining mechanism of my invention in an intermediate position of itspallet clamping movement;

Figure 6 is a fragmentary view, similar to Figure 4, showing themechanism of my invention in a position wherein a pallet is clampedbetween it and the load supporting member;

Figure 7 is a fragmentary view, similar to Figure 4, showing the palletretained on the load supporting member and with the load beingdischarged from the pallet and member; and

Figure 8 shows a portion of the hydraulic sys- :em for actuating themechanism of my inven- Like reference numerals have been employed in theseveral views to indicate the same or similar elments. 1

Referring now to Figures 1, 2 and 3, there is shown an industrial truck,indicated generally by the reference numeral In, said truck having adriving axle 2 and a steering axle i l adjacent its opposite ends. Acounter-weight I6 is carried at one end of the truck and at the otherend there is supported a vertical mast, indicated generally by thereference numeral 18, which comprises pairs of channel-shaped,vertically extending, upright members, "such as the members and 22,which are telescopically arranged. The mast is pivotally mountedadjacent the lower end of the front portion of the chassis and may beactuated to tilt the mastriorwardly or rearwardly and also to extend thetelescopic member 22 verticallyupwardly-and downwardly.

The industrial truck is provided with 'a-ste'er- 1 ing column 24 havingat its upper end=a-, conventional steering wheel which is manipulated bythe operator. Control levers 23, and 32 are provided for the operator,control 28, for example, controlling the vertical movement of the mast,:control -3i3 controlling tilting :of the mast and actuationor themechanism of my invention, and contro132 serving =to= operatethe-pushermechanism'or loadengaging frame, indicated generally by thereference numeraldd, :and-the vertically movable clamping jaw-36 (seeFigure 2). The :truck .is additionally supplied with a motor andconventional clutch'and brake pedals-and suit ablegearshift controls .sothat the vehicle may be driven either forwardly or backwardly.

.A load supporting carriage 38 has an upper "boss Manda lowerlboss 4,2.The carriage 'BB-is adapted ,tovmove upwardly .and downwardly on lthemast I8 andis adaptedto be tilted forward- "ly or rearwardly when saidmast isso tilted. To the up er boss 40 of the load supporting carriage38 thereis'seoured'a plate (not shown) across thefront of the truck andto each end of said plate is securedasideframemember 46. Each side framemember 44 has a bracket or gusset 2, 'asmovable jaw member 36 is carriedin the lower end of the framevfill between the bracketsBZ-Iandisguidedinsaid frameror verticalmove- -ment toward and :away the*fixed jaw 5 3, the ,nmvable jaw being adapted to seat within the groove5,6 of jaw v (54 in-order to form a crimping action -on the margin ofthe pallet which .it is adapted to grip. The movablejaw 36 is under thecontrol of vthe woperator through the controlilever '32 and jaw 36is-adapted toengage the fixedjaw 64 when the ioperatoractuatesthecontrol lever 32 in.adirection .to cause the frame '80 to be movedforwardly (that is, away from the mast I8), and the .jaw is adapted tobe retracted when the operatormanipulates the controllever 32 in adirection to cause the frame to be retracted.

Frame Bil which is-connectecl to the loadsupportingcarriagew is'hydraulicallyactuated and the actuating mechanism includes a piston rodother.

riage 38.

From the foregoing, it will be apparent that the load supportingcarriage 38 which is movable vertically on the mast l8 carries with itthe load engaging mechanism 36 which serves as a pushing r-dischargingdevice and a load steadying -device,'and also carries with it thehydraulic mechanism esncsror actuating said load engaging mechanism. Thechannels 50 guide and supporttheload-engaging mechanism as it is movedtoward and away from the mast 18 under the control of the operator. Fora more detailed description of the structure above described and itsmode of operation, reference may be made 'to theaforementionedjointapplication of myself andiFre'd Sheriff, Serial No. 766,658, filedAugust 6, 1947.

The" lower bossfiZ of'the'load supporting carriage 38is'adapted-to havesecured to it mechanism which comprises my .131'6SI1l3 invention,

"namely, the pallet retaining mechanism which is indicated generally bythe reference numeral "M. The jpallet retaining mechanism M coin-.prise's a plate l6 which extendsacross the front iofthe'industrialtruck and is secured to the 'boss 42, said plate l'fihaving secured toitslower edge a forwardly extending load'supportin'g member,

ormembers, l8 on'the surface of which a load and its pallet'are-adap'tedto be carried and supported during-transit from one location to an- Theload supporting member is tapered adjacent its forward end as may beseen most readily'in Figure 1. Adjacent either end of the plate i6 and'on'either side of the truck are se cured rearwardly extending bracketswhich support the "actuating elements of the pallet retaining mechanism.It will be observed that theloa'd engaging mechanism 3 3, comprising theframe 60 and the jaw members 36 and Ed, is adapted to pass above theload supporting sur- 'face 'oftheplaten, or platens, 18 so that a loadwhich is resting on said surface may be pushed 'the'r'efromby theloadengaging mechanism when the latter is ;moved forwardly across the loadsupporting platform '18. The pallet retaining mechanism-comprises in itspreferred form a bar or shaft 82 extending transversely across theload'supporting platform 78 and held at itsouter ends by arm '84, eachof which :is secured at its opposite end by a pin 66 to 'a shaft -88,which has pivotal movement in the supporting bracket as. On the inboardside of each bracket 88, :the shaft '88 is connected to a crank arm 9awhich has a pivotal connection, as -at-92, to a pistonrod-M which isconnected to a piston which is reciprocable in a hydraulic cylinder 96.The hydraulic cylinder 96 has a packing gland Qilat'that end throughwhich the piston rod 94 moves and adjacent said gland contains ahyclraulic passageway I00 leadinginto the cylinder. "At the opposite endof the cylinder 95 there is another hydraulic passageway I02 locatedonthe opposite side of the piston 95. At its left end (as viewed in Figure2) the cylinder 96 is pivotally connected, as at I04, to a bracket Hi6which is connected to the free end of the main supportingbra'cket 89.

When fluid, under pressure, entersthe passagefluid under pressure entersthe passageway I00 and fluid on the opposite side of the piston isdischarged through the passageway I02, the piston rod 90 is retractedand cranks the crank arm 90 and the connected arm 84 and bar 82 in acounterclockwise direction. The path of the bar 82 is indicated by thedot-dash line A of Figure 2.

It will be observed that in its lowermost position, as shown in Figure2, the bar 82 is adapted to seat below the surface of the loadsupporting platform 58 in a recess I08 which extends transversely of theload supporting platform I8 so that the frame 00 and the fixed jaw M atthe lower end of frame E0 of the load engaging mechanism 34 may freelypass over the bar during movement of the mechanism 34 toward and awayfrom the truck. It will be noted that, in the form shown, the recess I08is provided by reason of the load supporting platform 78 being welded toa short, forwardly extending plate I I0 which is connected to the plateI0 and extends transversely across the front of the truck. It will beappreciated that a recess could be formed in other manners and in asingle plate which would by itself constitute the load supportingplatform.

While the pallet retaining mechanism IIII may be actuated by a separatecontrol for directing fluid under pressure into or out of the hydrauliccylinder 00, in the preferred form of my invention the hydrauliccylinder 90 is connected in parallel with the hydraulic cylinder whichactuates the tilting mechanism for the mast It. If reference will now bemade to Figure 8, the parallel arrangement of the hydraulic cylinderswill be described. Within cylinder IIZ, which will be referred to as thetilt cylinder, is located piston I I4 having a piston rod I It. Pistonrod I it is adapted to be connected to the mast I8 while the cylinder H2is connected pivotally at its other end IIS to the chassis of theindustrial truck. A

fitting I is connected to end H0 of the cylinder I H2 and is adapted toadmit fluid to the inside of the cylinder at one side of piston us. TheT fitting I20 has one opening connected to a source of hydraulic fluidunder pressure and has its other opening connected to theconduit or hoseI22 which, in turn, is connected to a fitting I24' which is threadedinto the passageway I02 of cylinder 06. At the gland end of the piston lI2 a fitting I20 is adapted to have communication with the interior ofcylinder H2 on the right-hand side of piston I I4 (as viewed in Figure8) The fitting I25 is connected to a T connection I21, one opening ofwhich returns to the hydraulic reservoir anism.

It will be readily apparent that the operator, by manipulating thecontrol lever 30 to causefluid under pressure to enter the tilt cylinderH2 through fitting I20, may cause the piston II4 to tilt forwardly withrespect to the industrial truck the mast which is connected to thepiston rod IIG. Simultaneously, fluid under pressure will flow throughconduitIZZ and fitting I20 into the cylinder 90 and will actuate thepiston 95 in the same direction, thereby causing the pallet retainingmechanism M to rotate clockwise and into the position shown in Figure 8.At thi time, fluid is flowing from the right-hand sides of therespective hydraulic cylinders 96 and H2 (as viewed in Figur 8) andoutof the T connection I2! and back to the hydraulic reservoir and thehydraulic control mechanism under the control of the operator.

When the operator desires to tilt the mast I3 backwardly, the controllever 30 is manipulated to cause fluid under pressure to enter the Tconnection I27 and to pass therefrom through the fitting I20 into thecylinder I I2, while simultaneously flowing through the conduit I 28 andfitting I30 into the cylinder 06. The fluid under pressure will therebycause the pistons H0 and 05 to be moved to the left (as viewed in Figure8) whereupon the mast I8 will be tilted rearwardly and the palletretaining mechanism M will be rotated in a counterclockwise direction bymeans of the piston rod IIG to the dot-dash line position B of Figure 8.At this time, fluid is exhausted from the left-hand ends of thecylinders H2 and 96 and passes to the T shaped fitting I20 and thence toth hydraulic reservoir and the hydraulic control mechanism. It will beseen that if valve I32 in conduit I28 is closed, the necessary flow ofhydraulic fluid under pressure into and out of cylinder 96 will beprevented and consequently, only piston I I4 and its piston rod I IEwill be actuated.

It will be understood that the tilt cylinder H2 and the cylinder 96 foractuating the pallet retaining mechanism I4 may be connected by separatelines to separate control mechanisms at the disposal of the operator sothat they may be independently manipulated.

Turning now to Figure 4; through '7, it will be recalled that the loadengaging mechanism 36 and its clamping means comprising a fixed jaw 64and the movable jaw 30 are adapted to operate in a pre-determinedsequence, as set forth in the copending application of myself and FredSherrifi', Serial No. 766,558, filed August 6, 1947. When the loadengaging member 34, under the control of the operator, is actuated in aforward direction, the movable jaw 36 is first moved upwardly from thefixed jaw 04 before the load engaging mechanism 34 moves forwardly overthe load sup porting platform 78. When the movable jaw 35 is retracted,then the load engaging mechanism 34 will automatically move outwardlyover the platform "I3 to the outer end thereof so that the fixed jaw 60protrudes beyond said platform and into a position under the margin of asheet-like pallet. The clamping mechanism is adapted to close when theoperator 'actuates the control lever 32 to cause the load engagingmechanism to be retracted. That is to say, after the vertically movablejaw 36 has descended and pressed the sheet-like pallet against the fixedjaw 04 and into the groove 50, the load engaging mechanism is thenadapted automatically to be retracted and to thereby draw the pallet andany load which rests thereon on to the load supporting platform "I8 sothat said load may be transported from 7 place to place by theindustrial truck, as desired. As was pointed out earlier, the load maybe raised on the mast 8 at any time, either before, during or after thetransporting operation.

Assuming now that the load engaging mechanism 3:1 is being retracted andis gripping the margin ofa sheet-like pallet, such as the pallet I34 ofFigure 4, it will be seen that the load 36 will be drawn on to the loadsupporting platform iii. The load engaging mechanism 36 continuesrearwardly until it is adjacent the plate 16 of the pallet retainingmechanism l4. If, following this operation, the operator desires todischarge the load, together with its pallet, from the load supportingplatform i8, control lever 32 is manipulated in an opposite mannerwhereupon the movable jaw 3i;- is first retracted followed by movementof the load engaging mechanism 36 against the load [35 to push itoutwardly off of the load supporting platform 15. The pellet Ltd, byreason of the greater co-ellicient of friction between the load anditself than between itself and the platform 75, will be drawn off withthe load.

l-l'owever, if the operator desires to discharge the load 13% from theload supporting platform or platen is while yet retaining the pallet onsaid platform, he will momentarily manipulate the control lever 32 to aretraction of the movable jaw from the fixed jaw 66; whereupon thecontrol lever will he returned to neutral before the load engagingmechanism 3:! is caused to move said load and forwardly over the loadsupporting platform #8. Then the operator will manipulate the controllever which controls the tilt cylinder HE and the cylinder 85, in such afashion that the mast is and the load engaging carriage will be tiltedrearwardly simultaneously each piston rod as will he re tracted into itshydraulic cylinder and simultaneously will rotate the crank arms 99 in acounterclo'olm'ise direction. Arms Ell will thereby be rotated incounterclockwise direction and the her $32 will he moved arcuatelyupwardly from out of the recess i 38 and will lift the margin of thepallet 535, as shown in Fi ure 5, and then pass beyond said margin to aposition above it.

At that time. the operator will manipulate the control lever 3% in sucha fashion that the mast i8 and the load supporting carriage 38 will betilted forwardly while simultaneously the piston rods. 84 on each sideof the industrial truck will extend from their respective hydraulicCylinders and thereby rotate the crank arms in a clockwise direction sothat the bar 82 will be moved arcuately downwardly on top of the pallet13 i and into the position shown in Figure 6 where the margin of thepallet is held between the bar 82 and the surface of the load supportingplatform in the recess Hi8.

Although a cylindrical bar 82 is shown as the means for clamping themargin of the pallet 13d against the load supporting platform, it willbe understood that the bar may take other crosssectional shapes, ormight have a plurality of downwardly extending projections which wouldthemselves press against the pallet at spaced apart points. There alsomight be substituted for the bar, which extends entirely across the loadsupporting platform, a short stub section connected only by one end toeach arm at either side of the load. supporting platform.

The bar 82, having been moved to the position shown in Figures 6 and 7,the operator may now actuate the control lever 32 to cause the loadengaging mechanism to move forwardly across and above the rod 82 againstthe load 136, and to push the load across the pallet I34 and loadsupporting platform 78, and ultimately to discharge the load completelyfrom the pallet and platform while the pallet 1361 is retained on saidplatform. Thereafter, if it is desired to separately remove the palletfrom the load supporting platform 78, the operator manipulates thecontrol lever ill] to cause rearward tilting of the mast andsimultaneously to cause a counterclockwise rotation of the arms 84 whichcarry the rod 82 so that the rod '82 will be lifted upwardly and awayfrom the load supporting platform. The pallet may then be easilywithdrawn from the recess ti t, and the load supporting platform 78.

If the operator desires to render ineffective the pallet retainingmechanism, he first causes it to be moved to the 10 vermost positionshown in the various figures of the drawings, wherein it lies in therecess #98 below the level of the upper surface of the load supportingplatform l9. Then valve i372 (see Figure 8) conduit i 28 is closed toprevent the flow of fluid into or out of the hydraulic cylinder 93,while yet permitting the flow of fluid under pressure into and out ofthe tilt cylinder I 82. When that is done, the operator will be able toemploy the load engaging mechanism comprising the pusher frame ti! andclamping jaw 3t and 5t, independei'itly of the pallet retainingmechanism.

It will be readily apparent from Figures 1 and 2, that the palletretaining mechanism M canstitutes a unitary structure, which may hereadily engaged and disengaged from the boss E2 of the load supportingcarriage '38. It is, therefore, a very simple matter to remove thepallet retaining mechanism "it, and to substitute a different form ofload supporting platform, for ei ample, standard fork plates.

While I have shown a preferred embodiment of the invention, it will beapparent that various details of construction may be varied withoutdeparting from the scope of the invention, and I therefore do not intendto be limited to the illustrated embodiment, except insofar as theappended claims are so limited.

I claim:

1. For use with an industrial truck having an upwardly and downwardlymovable load supportmg carriage, the combination of load supportingmeans adapted to be secured to said load supporting carriage, said loadsupporting means including a load supporting member, load engaging meansmovable over said member and including clamping means adapted to grip asheetlike pallet having a load thereon to draw it onto said member, andpallet retaining means adapted to retain the sheet-like pallet on saidmember when the load engaging means is employed to discharge the loadfrom said pallet.

2. For use with an industrial truck having an upwardly and downwardlymovable load supporting carriage, the combination of load supportingmeans adapted to be secured to said load supporting carriage, said leadsupporting means including a load supporting member, a verticallydisposed pusher adapted to he extensible and retractable over saidmember, clamping means secured to the lower edge of said pusher adaptedto grip a margin of a sheet-like pallet, a bar member adapted toselectively retain a sheet-like pallet between it and said loadsupporting means, and means for moving said 9 bar toward and away fromsaid load supporting means.

3. For use with an industrial truck having an upwardly and downwardlymovable load s upporting carriage, the combination of load supportingmeans adapted to be secured to said load supporting carriage, said loadsupporting means including a load supporting member,- a verticallydisposed pusher adapted to be extensible and retractable over saidmember, clamping means secured to the lower edge of said pusher adaptedto grip a margin of a sheet-like pallet, a bar member adapted to retainselectively a sheet-like pallet between it and said load supportingmeans, means for moving said bar member toward and away from said loadsupporting means, and control means for said last named means wherebythe operator is enabled selectively to so position the bar that saidsheet-like pallet is retained between it and the load supporting meansso that the pusher may discharge a load from the pallet or to soposition the bar that the pallet is permitted to be discharged with aload thereon from the load supporting member by the pusher.

l. The combination of claim 2 wherein the bar is movable vertically intoor out of engagement with said surface and is adapted to lie beneath theplane of movement of said clamping means.

5. The combination of claim 2 wherein the means for moving the bar ishydraulically operated.

6. For use with an industrial truck having an upwardly and downwardlymovable load supporting carriage, the combination or" load supportingmeans having a transversely extending recess and adapted to be securedto said load supporting carriage, said load supporting means including aload supporting member, a vertically disposed pusher adapted to beextensible and retractable over said member, clamping jaws secured tothe lower margin of said pusher and extending transversely of saidmember, a bar extending transversely of said load supporting means andadapted to retain a sheet-like pallet between it and the recess portionof said load engaging means, and means for selectively moving said barvertically into and out of engagement with said recess in said loadsupporting means.

'7. For use with an industrial truck having an upwardly and downwardlymovable load supporting carriage, the combination of load supportingmeans adapted to be secured to said load supporting carriage, said loadsupporting means including a load supporting member, means movable oversaid load supporting member and adapted to grip a sheet-like pallethaving a load thereon to draw it onto said member, and means forretaining the pallet on said member while the load is being pushed offof said member by said means movable over the latter.

8. For use with an industrial truck having a tiltable mast, a loadsupporting carriage mounted for upward and downward movement in saidmast, the combination of load supporting means adapted to be secured tosaid load supporting carriage, said load supporting means including aload supporting member, a load engaging member movable over said loadsupporting member and having clamping means secured along the lower edgethereof, said clamping means being adapted to grip a pallet having aload thereon to draw it onto said load supporting member, means forretaining said pallet on said load supporting memher when said loadengaging member is employed for discharging the load from said pallet,means for causing tilting of said mast and carriage,-said last-namedmeans acting to render said retaining means inefiective when the mast istilted in one direction andto render said retaining means efiective whenthe mast is tilted in another direction.

9.For use with an industrial truck having a mast at the forward endthereof and a'load supporting carriage movable upwardly and downwardlywithin said mast, the combination of load supporting means adapted to besecured to the load supporting carriage, load engaging means movablefore and aft over said load supporting means, clampin means secured tothe lower edge of said load engaging means for gripping the margin of asheet-like pallet to draw it onto said load supporting means, palletretaining means carried by said load supportin means and being adaptedto retain the pallet on the load supporting means when a load is beingpushed off of the pallet by said load engaging means, means foractuating said pallet retaining means, means for tilting said mast andsaid lead supporting member, selectively operable control means foreffecting actuation of said last named means, and said pallet retainingactuating means being responsive to tilting movement of said mast andload supporting member.

10. The combination of claim 9' wherein the control means for tiltingsaid member is hydraulically actuated.

11. The combination of claim 9 wherein the actuating means for thepallet retaining means and the control means for tilting the loadsupporting member include hydraulic cylinders connected in parallel, andvalve means for rendering inefiective the hydraulic cylinder for saidactuating means.

12. For use with an industrial truck having a generally verticallyextending tiltable mast at one end thereof, a load supporting carriagemovable upwardly and downwardly Within said mast, the combination ofload supporting means adapted to be secured to said load supportingcarriage, a pusher movable across said load supporting means, clampingmeans including a fixed jaw and a vertically movable blade disposed atthe lower edge of said load engaging means, pallet retaining meanscarried by said load supporting means comprising a bar extendingtransversely of said load supporting means, means carried by said loadsupporting means for moving said bar vertically into and out ofengagement with said load supporting means, and said bar being adaptedto be positioned beneath the plane of movement of said clamping means.

13. The combination of claim 12 wherein the actuating means for thepallet retaining means is responsive to the direction in which the loadsupporting carriage is tilted.

14. For use with an industrial truck having a vertically extendingtiltable mast at one end thereof, a load supporting carriage movableupwardly and downwardly Within said mast, the combination of loadsupporting means adapted to be secured to said load supporting carriage,pallet retaining means carried by said load sup porting means adjacentsaid load supporting carriage, said pallet retaining means comprising abar extending transversely of said load supporting means, said bar beingvertically movable into and out of engagement with said load supportingmeans for gripping a sheet-like pallet between it and; 433 m d: uppor ma. a d means r,- EieQhY aisl qad pq n me s f a ua aid 9341.182? r a ninma s.

GEORGE L. TURN-ER.

References Cited in the file of this. patent UNITED STATES PATENTS Nmber me D e 2,256,154 Bqman Sept. 16, 1941 10 Number 12 Name Date NeumanNov. 17, 1942 Wilms Mar. 2,0, 1945 Isler Feb. 12, 1946 Golripk Feb. 12,1946 Pride May 2,7, 194,7 Pride Jan. 11,. 1949 Rydner- Nov. 27, 1951Turner et, a1. Mar. 25.1952

